Darts Iron blocks for Ford are designed to work with stock components, but are much more than a stock replacement.
Designed from the ground up for hard core racing, all the weaknesses of the factory castings have been addressed. Dart blocks are cast from premium high strength Iron with extra thick cylinder walls and decks. The main webs are beefed up and fitted with steel 4-bolt main caps.
FEATURES
Siamesed cylinders: Standard 4.125 cylinder can be safely bored to 4.185 diameter, extra thick walls prevent cracking and improve ring seal.
Extended cylinder barrels for improved piston support.
Deck height: 9.200 (351C)
Steel 4-bolt main bearing caps are standard. Three center caps have splayed outer bolts for maximum strength.
Main bearing diameter: 351C
Upgraded oiling system has been completely redesigned with a low restriction priority main oiling system with rear external oil pump feed.
Reinforced head bolt bosses are blind tapped to prevent leaks and produce accurate torque readings. Extra thick decks prevent head gasket leaks.
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